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//proc/self/root/usr/local/lib/python3.9/test/test_openpty.py
# Test to see if openpty works. (But don't worry if it isn't available.) import os, unittest if not hasattr(os, "openpty"): raise unittest.SkipTest("os.openpty() not available.") class OpenptyTest(unittest.TestCase): def test(self): master, slave = os.openpty() self.addCleanup(os.close, master) self.addCleanup(os.close, slave) if not os.isatty(slave): self.fail("Slave-end of pty is not a terminal.") os.write(slave, b'Ping!') self.assertEqual(os.read(master, 1024), b'Ping!') if __name__ == '__main__': unittest.main()